Scraper for road-rollers.



No. 687,208. Patented Nov. 26, [90L S M. I]. DOYLE.

SGBAPER FOB ROAD ROLLERS. (Applicatibn filed July 11, 1901.) (No Model.)

WITNESSES: -[NV NTOR. 0 MM #1 Q x PATENT OFFICE.

MICHEAL D. DOYLE, OF SPRINGFIELD, OHIO,

JEFFORD H. PURSELL,

ASSIGNOR OF ONE-HALF TO OF SPRINGFIELD, OHIO.

SGRAPER FOR ROAD-ROLLERS.

SPECIFICATION forming part of Letters Patent No. 687,208, dated November 26, 1901 Application filed July 11, 1901.

To all whom it may concern.-

Be it known that I, MIOHEAL D. DOYLE, a citizen of the United States,residing at S pringfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Scrapers for Road-Rollers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to scrapers for roadrollers, and has for its object to provide a simple and efficient device capable of being readily placed in operative or inoperative position and which shall serve to prevent the adhesion of road material or the like to-the drivingwheels of road-rollers, more particularly of the steam-actuated type.

To these ends my invention consists in certain novel features which I will now proceed to describe and will then particularly point out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of a road-roller having my improvement applied thereto. Fig. 2 is a plan View of a portion of the same, showing one of myimproved scrapers; and Fig. 3 is a sectional View taken on the line now of Fig. 2 and looking in the direction of the arrows.

In said drawings I have shown a road roller of a well-known construction provided with the driving-wheels 1. I propose to apply a scraper to each side of each driving-wheel, and it is to the particular construction of these scrapers that my invention relates. Each scraper is mounted upon a shaft 2, projecting from the body of the roller, and I prefer to construct each pair of shafts on the same side of the wheels in a single piece. In other words, the rear shaft 2 (shown in the drawings) extends entirely through .the rear tank of the roller in which it is mounted and projects on each side to receive the scraper on that side, while the front shaft is similarly arranged. On this shaft 2 are mounted the scraper-carrying arms 3, each arm being preferably formed with a strap or eye at at its rear end, surrounding the shaft 2 and clamped thereon by means of a bolt 5. At their free ends the arms 3 carry the scraper-blade 6,

which is mounted to slide longitudinally on said arms and radially with reference to the Serial No. 67,838. (No model.)

wheel 1. To this end each arm 3 is provided with a longitudinal slot 7, and the scraperblade is provided with bolts 8, which pass through the blade and through said slots, serving to guide the blade upon the arms. In order to hold the blade up to its work when necessary, I employ a spring 9, which spring is coiled around a supporting-arm 10, suitably secured to the shaft 2, preferably in the same manner as the arms 3, by providing at the end of said arm 10 a strapor eye 11, provided with a clampingbolt 12. The supportingarm 10 is provided with a threaded portion 13, on which are mounted nuts let, which bear against one end of the spring 9, the otherend of the spring bearing against the back of the scraper-blade. I prefer to slot the forward end of the supporting-arm 10, as indicated at 15, so as to receive and support the rear edge of the scraper-blade,which moves freely therein. In order to prevent the shaft 2 from turning in such a direction as to permit the scraper to yield upward and away from the wheel when at work, I secure on said shaft 2 a stop-arm 16, which extends into a slotted projection 17 on the frame of the roller, said projection forming a stop to prevent movement of the arm and rotation of the shaft. This stop-arm is preferably secured to the shaft in the same manner as the other arms-- by providing at its end a strap or eye 18 and clamping-bolt 19.

The scraper thus constructed operates in the following manner: When it is desired to use the scraper, it is placed in the position shown, with the working edge of the scraperblade about on a horizontal line with the axis of the wheel. The nuts 14 are then turned so as to cause the spring to press against the back of the blade with the desired pressure, thus holding the scraper properly against the wheel. This produces a yielding pressure, which is obviously advantageous, even when the wheel is true, and which is especially advantageous when the wheels surface or tread is not a true circle with reference to the axis of rotation of the wheel, since it permits the scraper to accommodate itself to the variations of that surface and to always remain in operative relation thereto without binding. When the scraper is not required, it is sufficient to rotate the nuts 14 in the opposite direction, thereby releasing the spring-pressure and leaving the scraper free to recede from the surface of the wheel. WVheels of this type are frequently employed in connection with spikes, which may be inserted in the tread of the wheel in order to break up the surface operated on. The apertures for these spikes are indicated at- 20 in Fig. 1. When these spikes are applied to the wheel, it is necessary to move the scrapers out of the way, and this is accomplished by loosening the nuts which clamp the arms on the shaft and by swinging the entire scraper downward, thus giving full clearance for the spikes. The scraper may be readily swung back into the proper operative position and clamped there when the spikes have been removed.

It is obvious that various modifications in the details hereinbefore described may be made without departing from the principle of my invention, and I therefore do not wish to be understood as limiting myself to the precise embodiment of my invention hereinbefore described and shown in the accompanying drawings.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A scraper for road-rollers comprising a support normally radial with respect to the wheel, a scraper-blade mounted to slide on said support toward and from the wheel in a direction radial thereto, a spring carried by said support and bearing at one end against the scraper-blade, and an abutment for the other end of the spring adjustable toward and from the scraper-blad e, whereby the pressure of said spring may be regulated or released, substantially as described.

2. A scraper for road-rollers comprising a shaft substantially parallel with the base of the wheel, a support mounted on said shaft and adjustable around the same, means for securing said support in a normal position substantially radial to the wheel, a scraperblade mounted on said support and adapted to slide thereon longitudinally of the support and radially with respect to the wheel, a spring carried by the support and bearing at one end against the scraper-blade, and an abutment for the other end of the spring adjustable on said support toward and from the scraperblade, substantially as described.

3. A scraper for road-rollers comprising a shaft, arms clamped to said shaft, adjustable around the same and normally radial to the wheel, a scraper-blade slidably mounted on said arms so as to move radially toward and from the wheel, an intermediate arm also adjustable around the shaft, a spring coiled around said intermediate arm and bearing at one end against the scraper-blade, and an abutment for the other end of said spring longitudinally adjustable on said intermediate arm, substantially as described.

4:. A scraper for road-rollers comprising supporting-arms provided with longitudinal slots, a scraper-blade having bolts extending through said slots and traveling therein, and a spring supporting-arm slotted at one end to receive the scraper-blade and provided with a spiral spring adapted to bear against the back of the blade at one end, said spring supporting-arm being provided with a threaded portion and with nuts mounted thereon and adapted to bear adjustably against the other end of the spring, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

MIOHEAL D. DOYLE. lVitnesses:

IRVINE MILLER, WILL F. LAUGHLIN. 

